ClickHouse at FOSDEM 2026

FOSDEM 2026 in Brussels was a vibrant weekend for the ClickHouse community, featuring a mix of social gatherings and insightful presentations. The event began with a community dinner attended by 106 participants, including ClickHouse founder Alexey Milovidov. Key presentations included a session on building real-time visualizations with ClickHouse, a novel approach to hot-patching production systems using LLVM's XRay, and leveraging inverted database indexes for efficient text processing. Other talks covered integrating Rust with C++ in ClickHouse, optimizing byte movement in software, and contributing to open-source projects like MariaDB and Postgres. Additionally, community discussions highlighted dynamic bot blocking using web-server access-log analytics. The event was not only a chance for learning but also for networking and building connections within the open-source community.

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